I sell a lot of liners to rotary people, they weight makes it easy to maneuver and to switch back and forth with rotaries. The RCA adaptor is what adds a bit of weight. I'm going to start making them out of aluminum soon, they are brass now. I started making the AL13 Pyro X with 1.5 1" weird but strong as hell and super light. I don't have that setup on the site but I'd do it upon request.

Hope you enjoy your FK